Scraping device



A. B. HELFRICH.

SCRAPING DEVICE.

APPLlcATxoN FILED ocT. 18, 1919.

1,409,949, Patented Mar. 2151922.-

awkw- ATTORNEY ALBERT B. HELFRICH, OF INDIANAPOLIS, INDIANA.

scRAPrNG Davies.

` Specification of Letters Patent.A

Patented Mar.`V 21:,

Application led October 18,1919. Serial No. 331,625.

To @ZZ fic/lam 'it may conce/'1i l Be it known that I, ALBERT B. HELFRICH, Aa citizen of the United States', and a resident of Indiana-polis, county of'Marion, and State of Indiana, have invented a certain new and -useful Scraping Device; and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

-T his invention relates to a backiilling or trench filling machine and the like wherein the earth transferring device is self loading and self dumping, so that the engineer of the machine is the sole operator required, since heretofore in machines of this type an additional operator has been required to guide the earth transferring device and assist inthe loading and unloading thereof.

Another object of the invention .is to provide in a backfilling machine a scraper which can transfer all the Vremove earth back to the trench.

The full nature of the invention will 'be understood from the accompanying drawings and the following specification and claims. I ,l i i In the drawings, Fig.A 1 is a side elevation of the invention when used as a back filling device, the scraper being loaded. Fig. 2 is a similar view showing the parts in the unloadingV position. Fig. 3 'is a plan view'vof the scraper taken on theA line 3 3 of Fig. 2.

In the accompanying' drawings V1() A indicates a'boom of a powerunit with which the Vinvention is used. The power unit is provided with Vtwo independent .power ca-V bles 11 and 12, the former being attached .to the rear ofthe improved scraper, andthe latter `to vthe front of 'the scraper Yfor operating the same. Inbacklling machines the machine movesparallelwith the trench, and in prior devicesan additional operator was required toguide the scraping device. Herein the cables 11 and 12 are attached to the device in such a. manner that the perator of the backlilling machine also controls the operation of the scraping device.

,T he scraping device comprises a scraping' plate or scoop 13, upon the rear side of which are secured two pairs of hinge forming angle plates providing pivotal connections for members hereinafter to be described. These mountings'consist of an upper pair 14 and a lower pair 1,5. Upon each of the upper hinger plates 14 is pivotally mounted afbar link member 16, while upon each of the lower pair of hinge plates 15 is pivotally mounted the link members 17. i 17 are connected by a curved bar link 18, one end of the link 16 being connected to one end of the link 18, while the link 17 is pivotally connected intermediate the ends of the link 18; The links 18 are connected by the rod- Irojecting rearwardly from'the scraping plate13 and pivota-lly connected therewith arethe pairs of bar links 21 and 22. The links 21 are pivotally mounted on lthe hinge plates 141, and the links 22 are pivotally mounted on the hinge plate 15, all the links 21 and 22 being connected by means of a rod 23, thereby forming a rigid triangular supporting framework for the scraping plate 13. f i To the forward ends of the curved links 18 is secured 'a chain 24 to which the cable 12 is attached.V To the rod 28 is secured a chai-n 25, to which the cable 11 is attached. ,Upon the rod 23 is mounted a weight member herein shown by the pipe 26. The links 16V are also shown as having an adjustable connection with the plate 13, forv which purpose the holes 27 are provided. Io the links 16 and The bar links 16 and Y 17 are secured pairsof stopr pins 20. The

upper pins 2O limit ythe forward movement 'of the links 16 by engaging the curvedlinks 18,'.while the rearward movement of the links 18 is limited by the lower pins 20, seefFigsQ2 and 1 respectively. Inv Figs. 1 and 2 there is shown a trench 28, in the bottom ofwhich has'been'laid a pipe or conduit 29. The earth from the trench, as herein shown, is at one side there-l of. The opposite side of the trench supportsthe carriage and'power portion of the back-filling machine with which the invention is used. Upon the application of power to the cable 12,.the upper endsv of links 18 are moved rearwardly towards the lower end Y ofthe plate 13 until the links 18 engage the lower pair Yof stops 20.'V Continued applica-V tion of power to the cable 12 causes the plate 13'to engage the earth 30 and scrape the same ktowards the trench.

Y hen'the lower edge 81 of the plate 13 reachesthe `edge ofthe. trench the power is removed from thel cable 12. Upon the application of power to the cable 11, the edge 31 of the plate 13 acts asa Vfulcrum and pivot, whereupon the upper portion of the plate and the links 18 are projectedforwardlyuntil the latter engage the upper pair of pins 20. In this manner the scraping plate throws into the trench the earth that is carried toward it. The cable 12 is then released, and the continued application of power to the cable 11 returnsv the scraper to its original position, as shown in Fig. l, the parts however remaining as shown in Fig. 2. The application of power to the cable 12 will then cause the parts to resume thepositionshown in Fig. 1 and whereupon thebackfilling may be continued.

"As shown herein Vthe links 16 are providedfwith.additionalholes 27 so that the plate 13 may be adjusted so that the angle ofthe slip is that of the kinds of earth to be moved.` From the foregoing it will be apparent that but one operator is necessary to control'the `backfilling.machine and handle the scraper, which isself loading 4and self dumping," in the manner described. Furthermore,` as shown by the position of the edgeBlin Fig. 2, the scraper is adapted to entirely remove the earth from the street, since the edge 3l is adapted to enter a gutter and entirely removing the earththerefrom. l d,

While I `have Ahereinbefore described the preferred embodiment of my invention with some particularity,I recognize the fact that various `changes maybe made in the detailed 4als construction and arrangement of the parts herein shown,`therefore no undue limitation should beunderstood from the :foregoing detailed description; i a a In" the, foregoing `specificationsfand the following claims the term plate and `plate means includes a scoop of any desired shape.

The invention claimed is: 1. In a"self-loadingand self-dumping scraping device, the combination of a plate, a pair of bars pivotally supported near the upperl corners `ofthe plate andatopposite sides thereof, a second pair of bar Llinks similarly supported near the lower corners of said plate, anotherv pair of bar links, each of said last mentioned links being adapted to pivotally support the other ends of the links upon the same side ofthe plate, and a pairof oppositely extending cables associ-L ated with the plate and the bar links for moving and tilting the plate for loading, transporting and unloading material to be handled thereby. e

2. In a self-loading and self-dumping scraping device, the combination of a plate, a pair ofbars pivotally supported near the upper corners of the plate and at opposite sides thereof, a second pair of bar links similarly supported near the lower corners of said plate, another pair of bar links, each of. said last mentioned links being adapted to pivotally support the other ends of the links upon thel same side of the plate, a pair of oppositely extending cables associated with the plate and the bar links for moving and tilting the plate for loading, transporting and unloading material to be handled thereby, and limit means associated with an upper bar link for limiting the unloading tilting movement of the plate means.

3. In a self-loading and self-dumping scraping device, the combination of a plate,

a pair of bars pivotally supported near the upper corners of the plate and at opposite sides thereof, a second pair of bar links similai-ly supported near the lower corners of said late, another pair of bar links, each of said ast mentioned links being adapted to pivotally support the other ends of the linksV upon the same side 4of the plate, a pair of oppositelyextendingcables associated with the' plate and the bar links'for moving and tilting'the `plate for loading, transporting and unloading "material to be handled thereby, and means associated with a lower vbar link for limiting the tilted position of the plate means in the loading and transportingof the material. d d

4. In a self-loading ,and self-,dumping scraping device, the combination of a plate, a pair of barspivotally supported near the upper corners of the plate and at opposite sides thereof, a second pair of bar links sim-ilarly supported near the lower corners of said plate, another pair ofbar links, each of said last mentioned links being adapted to pivotally support the other ends of the links upon the same side of the plate, a pair of oppositely extending cables associated with the plate and the bar links for moving and tilting the plate for loading, transporting and unloading material to be -handled thereby, limit means associated with an upper bar link for limiting the unloading'tilting movement of the plate means, and means associated with a lower bar link for limiting the tilted position of the plate means in the loading and' transporting of the material.A

i 5.` In as'elf-loa ing and self-,dumping de- 110 vice, the combination with an yearth-removing plate means, a cable for moving said plate means in one direction, and a second cable for moving said plate means in the opposite direction, of articulated means in- 115 terposed between said plate means and said yfirst mentioned cable means which tilts said plate means into unloading` position when said first mentioned cable means is held stationary and said second mentioned cable means is actuated.

6. In a self-loading and self-dumping device, the combination with an eartlrremoving plate means, a cable for moving said plate means in one direction, ,and a second 125 cable for moving" said plate means in the opposite direction, of means interposed between said plate means and said first menf tioned cablefor tiltably mounting the same, and a weight upon the opposite side of the plate means-and radapted' to maintain the plate means in the loading position.

7. In a self-loading andself-dumping vdevice, the combination with an earth-removing plate means, a cable for moving said plate means in one direction, and a second cable for moving said plate means in the opposite direction, of means interposed between said plate means and said first mentioned cable for. tiltably mounting the same, and a weight upon the opposite side of the plate means and adapted to-tilt the plate means into loading position when the first mentioned cable is slackened and the second mentioned cable is actuated.

8. In a self-loading and 'self-dumping device, the combination with an earth-removing plate means, a cable for moving said plate means in one direction, and a second cable for moving said plate means in the opposite direction, of articulated means interposed between said plate means and said rst mentioned cable means which tilts said plate means into unloading position when said first mentioned cable means is held stationary and said second mentioned cable means is actuated, and means for limiting the tilting movement of the plate means.

9. In a self-loading and self-dumping device, the combination with an earth-removing plate means, a cable for moving said plate means in one direction, and a second cable for moving said plate means in the opposite direction, of means interposed between said plate means and said first mentioned cable for tiltably mounting the'same, a weight upon the opposite side of the plate means and adapted to tilt the plate means into loading position when the first mentioned cable is slackened and the second mentioned cable is actuated, and means for limiting the tilting movement of the plate means.

10. In a self-loading and self-dumping device, the combination with an earth-removing plate means, a cable for moving said plate means in one direction, and a second cable for moving said plate means in the opposite direction, of means interposed between said plate means and said first mentioned cable for tiltably mounting the same,

tioned cable means :tor tilting said plate means intov unloading position when said first mentioned cable means is held stationary and said second mentioned cable means is actuated, and a weight upon the opposite side of` the plate meansrand adapted to tilt said platefroln tlie unloaded position into the loading posit-ion when the first`men tioned cable is 'released and the second mentioned cable is actuated, and being further adapted to maintain the plate means in vthe loading position during the loading and transporting movements of the plate means when the second mentioned cable is loosened and the first mentioned cable is actuated.

12. In a self-loading and self-dumping device, the combination With an earth-removing plate means, a cable for moving said plate means in one direction, and a second cable for moving said plate means in the opposite direction, of means interposed between said plate means and said first mentioned cable means for tilting said plate means into unloading position when said first mentioned cable means is held stationary and said second mentioned cable means is actuated, a Weight upon the opposite side of the plate means and adapted to tilt said plate from the unloaded position into the loading position when the first mentioned cable is released and the second mentioned cable is actuated, and being further adapted to maintain the plate means in the loading' position during the loading and transporting movements of the plate means when the second mentioned cable is loosened and the first mentioned cable is actuated, and means for limiting the unloading movement Aof the plate means.

13. In a self-loading and self-dumping device, the combination with an earth-removing plate means, a cable for moving said plate means in one direction, and a second cable for moving said plate means in the opposite direction, of means interposed between said plate means and said first mentioned cable means for tilting said plate means into unloading position When said first mentioned cable means is held stationary and said second mentioned cable means is actuated, a weight upon the opposite side of the plate means and kadapted to tilt said plate from the unloaded position into the loading position when the first mentioned cable is released and the second mentioned cable is actuated, and being further adapted to maintain the plate means in the loading position during the loading and transporting movements of the plate means when the second mentioned cable is loosened and the first mentioned cable is actuated, and means for limiting the loading movement of the plate means.

14. In a self-loading and self-dumping device, the combination with an earth-rementioned cable is released andthe second mentioned cable is actuated, and being'furtheradapted to maintain the-plate means in the loading position during the loading and transporting movements of the platemeans When the second mentioned cable is loosenedy andthe first mentioned cable is actuated, means for limiting the unloading movement of the platemeans, and means for limiting the loading movement of theplate means.

- In Witness whereof, l,I have hereunto aifiXed my signature.

ALBERT B. HELFRHH.V 

